Let's say I have a web app that offers widgets to be used by a user. A user can deplete widgets to zero, at which point, they would be shown that they need to buy more in one or more packs of 50. From a UX perspective, how can I show this visually?
I considered doing something like:
But I want to also make it clear that the user can buy as many packs of 50 as they need (no limit). I like the concept of the meter in that it shows that they are running low, but I'm having trouble with the upper bound.
Update based on response: